Exa Search API
by exa.ai
AI search and web reading
Added on November 3rd, 2026
Checked and working on November 3rd, 2026
Visit exa.ai →
What it does
Exa is a web search engine built for AI apps: ask in plain language and get matching pages with their text, highlights or summaries, for example to ground a chatbot answer in current sources. Requests are JSON POST calls with an x-api-key header. Free with a free API key: $10 in credits every month, no payment method needed; paid per request after that. An official MCP server at https://mcp.exa.ai/mcp lets AI agents search and fetch web pages, without a key at a free rate limit.
At a glance
- API key
- Needed, free · More APIs with a free key
- Pricing
- Free with a free API key: $10 in credits every month, no payment method needed; paid per request after that.
- From the browser
- No, call it from a server
- Formats
- JSON
- Interface
- REST, MCP
- Provider
- exa.ai
- Last checked
- Working on November 3rd, 2026
More information: https://exa.ai/docs/reference/search
Compare: Tavily Search API vs Exa Search API
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Example request
curl
curl -X POST 'https://api.exa.ai/search' \
-H 'x-api-key: YOUR_API_KEY' \
-H 'Content-Type: application/json' \
-d '{"query":"latest research on solar panels","numResults":3}'JavaScript
const response = await fetch("https://api.exa.ai/search", {
method: 'POST',
headers: {
"x-api-key": "YOUR_API_KEY",
"Content-Type": "application/json",
},
body: JSON.stringify({"query":"latest research on solar panels","numResults":3}),
});
const data = await response.json();
console.log(data);Python
import requests
response = requests.post(
"https://api.exa.ai/search",
headers={
"x-api-key": "YOUR_API_KEY",
"Content-Type": "application/json",
},
json={
"query": "latest research on solar panels",
"numResults": 3,
},
timeout=30,
)
print(response.json())Replace YOUR_API_KEY with your own key. Run the JavaScript on a server, such as Node.js 18 or newer: this API does not accept calls from web pages on other sites.